Multiple thermal cut-out



(No Model.) 2 Sheets-Sheet 1.

L. B. FAVOR. MULTIPLE THERMAL OUT-OUT.

' No. 431,186. Patented July 1, 1890.

wnnnssfis: INVENTOR I Lorenzofi. favor ATTORNEY (No Model.) 2 Sheets-Sheet. 2.

L. B. FAVOR. MULTIPLE THERMAL CUT-OUT.

No. 431,186. Patented July 1, 1890.

R m Nr 5 ATTORNEY v: nouns rlYUll 00., morn-Lama, wmmaww n c UNITED STATES PATENT OFFICE.

LORENZO B. FAVOR, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR-TO THE THERMAL ELECTRIC COMPANY, OF MAINE.

MULTIPLE THERMAL CUT-OUT.

SPECIFICATION forming part of Letters Patent NO. 431,186, dated July 1, 1890.

Application filed April 14, 1890. Serial No. 347,776. (No model.)

To all whom it may concern.-

Be it known that I, LORENZO B. FAVOR, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Electrical Thermal Cut-Outs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has reference to certain new and useful improvements in thermal cutouts for use in connection with low-tension electrical circuits, and has for its object to provide a simple device of this description, the construction whereof shall admit of econ.- omy in cost and ready adaptability in use.

In the accompanying drawings, Figure 1 is a plan of my improvement, and Fig. 2 a longitudinal sectional elevation of the same.

Similar letters denote like parts in both figures of the drawings.

A is the base, which is made of wood or any other suitable non-conducting material. B is a metallic bar secured to said base and provided with binding-posts C D, for the purpose presently explained.

E is a bridge of non-conducting material, as hard rubber, secured to the base, and .F are metallic levers pivoted to said bridge at a in the arc of a circle, as shown at Fig. 1.

At the heel ends of said levers are bindingposts G.

II is a short shaft, which is swiveled within the base A, as seen at Fig, 2, and carries at its upper end a metallic pawl I.

J is a volute spring, one end of which is secured to the shaft H, as shown at b, Fig. 2, the other end being'attached to a bindingpost K, which rises from the base.

L are fusible wires, which are secured to the binding-posts C G, in order to electrically connect the bar B and bridge E. The nose of the pawl'I is normally in engagement with the nose of the outermost pivoted lever F, the tendency of the spring J being to throw said pawl into engagement vwith the next succeeding lever. The ends of the line-wire are secured to the binding-posts D K, so that the electrical current will pass from the bar B to the pawl I, through the medium of one of the fusible wires L and levers F, and thence through the pawl, shaft H, and spring J, to the binding-post K. Should a high-tension current strike or become crossed with the cir cuit, the wires L will fuse, thereby opening the circuit, the latter being closed by the automatic engagement of the pawl I with the next succeeding lever F. As soon as a wire fuses thespring act-ion of the pawl will swing the engaging-lever outward, so that said pawl may readily pass by the same and become engaged by the next succeeding lever. The base may be secured, to a wall or may be mounted flat upon any suitable table.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an electrical thermal cut-out, the combination of the non-conducting base, the conducting-bar secured thereto, the pivoted conducting-levers insulated from each other, the fusible conducting-wires connecting said bar and levers, and the spring-actuated pawl adapted to normally engage said levers, the ends of the line-wires being in connection, respectively, with said bar and pawl, substantially as set forth.

2. The combination of the non-conducting base, the conducting-bar and non-conducting bridge secured on said base, the metallic levers pivoted to said bridge, with their noses extending in the arc of a circle, the fusible wires connecting said levers and bar, the short shaft swiveled in said base and carrying the metallic pawl, whose nose is adapted to engage with the said levers, and the volute ing-bar mounted on a non-conducting base I In testimony whereof I afilx my signature and electrically connected with the 'respectin presence of two witnesses. ive ends of the line-wire, of the pivoted conducting-levers, whose noses are within the op- LORENZO B. FAVOR. 5 erative field of said pawl, and the fusible \Vitnesses:

wires which connect: said levers with said BENJ. I'I. CORLISS, Jr.

bar, substantially as shown and set forth. H. FRANK TILKES. 

